Radon gas, a naturally-occurring gas that forms when uranium decays, is another known cause of lung cancer. 

   Asbestos is a compound that was widely used in the past as both thermal and acoustic insulation material. 

Heredity, since all smokers do not eventually develop lung cancer, it is likely that other factors, such as individual genetic susceptibility, may play a role in the causation of lung cancer 

 Air pollution from vehicles, industry, and power plants, can raise the likelihood of developing lung cancer in exposed individuals. 

This is an option when the cancer hasn’t spread too far in your body. It’s usually the best way to treat non-small-cell lung cancer.
Your doctor can remove the part of the lung that has the tumor and the tissue around it. Or you may need to have your entire lung removed. You might also need radiation or chemotherapy after surgery.

If you have non-small cell lung cancer and can’t have surgery, this treatment may be an option.
Your doctor guides a thin needle through your skin until it touches the tumor inside your lung. Then an electric current passes through it to heat and kill the cancer cells.

Doctors use a machine to point high-energy X-rays at a tumor to destroy it. It works for both non-small-cell and small-cell lung cancers.

You get radiation treatments a few days at a time over several weeks. You might get it before surgery to shrink a tumor to make it easier to remove, or after surgery to kill any cancer cells left behind.

These medicines kill cancer cells in the body. It’s an option for both types of lung cancer.
You might get chemo before or after surgery, combined with radiation therapy. Or it might be your main treatment if surgery won’t work for you.
Your doctor may prescribe one type of chemo drug or a mix of different ones. You’ll get them through an IV at a treatment center or hospital. You may need a few rounds of treatment over several weeks.